Automation System
Direct Numerical Control means:

using several computers to control one large machine
using one computer to control several machines
complete elimination of a need for a human operator.
None of these
eliminating computers from the manufacturing process

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Automation System
The SKETCHPAD system

All of these
None of these
is used for interactive Graphics
is expensive because it is sophisticated and make demands on the power and resources of the computer.
consisted of an cathode-ray oscilloscope driven by a Lincoln Tx2 computer where by graphical information was displayed on the screen.

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Automation System
Ergonomics refers to:

the level of involvement the operator has with the workstation
the technology involved in the workstation itself
the cost relationship of the workstation versus productivity
None of these
the human aspect of the environment around the workstation as well as the workstation itself

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